tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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test_action-take-census.js (2317B)

      1 /* Any copyright is dedicated to the Public Domain.
      2   http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 "use strict";
      5 
      6 /**
      7 * Tests the async reducer responding to the action `takeCensus(heapWorker, snapshot)`
      8 */
      9 
     10 var {
     11  snapshotState: states,
     12  censusDisplays,
     13  censusState,
     14  viewState,
     15 } = require("resource://devtools/client/memory/constants.js");
     16 var actions = require("resource://devtools/client/memory/actions/snapshot.js");
     17 var {
     18  changeView,
     19 } = require("resource://devtools/client/memory/actions/view.js");
     20 
     21 // This tests taking a census on a snapshot that is still being read, which
     22 // triggers an assertion failure.
     23 EXPECTED_DTU_ASSERT_FAILURE_COUNT = 1;
     24 
     25 add_task(async function () {
     26  const front = new StubbedMemoryFront();
     27  const heapWorker = new HeapAnalysesClient();
     28  await front.attach();
     29  const store = Store();
     30 
     31  store.dispatch(changeView(viewState.CENSUS));
     32 
     33  store.dispatch(actions.takeSnapshot(front));
     34  await waitUntilState(store, () => {
     35    const snapshots = store.getState().snapshots;
     36    return snapshots.length === 1 && snapshots[0].state === states.SAVED;
     37  });
     38 
     39  let snapshot = store.getState().snapshots[0];
     40  equal(snapshot.census, null, "No census data exists yet on the snapshot.");
     41 
     42  // Test error case of wrong state.
     43  store.dispatch(actions.takeCensus(heapWorker, snapshot.id));
     44  await waitUntilState(store, () => store.getState().errors.length === 1);
     45 
     46  dumpn("Found error: " + store.getState().errors[0]);
     47  ok(
     48    /Assertion failure/.test(store.getState().errors[0]),
     49    "Error thrown when taking a census of a snapshot that has not been read."
     50  );
     51 
     52  store.dispatch(actions.readSnapshot(heapWorker, snapshot.id));
     53  await waitUntilState(
     54    store,
     55    () => store.getState().snapshots[0].state === states.READ
     56  );
     57 
     58  store.dispatch(actions.takeCensus(heapWorker, snapshot.id));
     59  await waitUntilCensusState(store, s => s.census, [censusState.SAVING]);
     60  await waitUntilCensusState(store, s => s.census, [censusState.SAVED]);
     61 
     62  snapshot = store.getState().snapshots[0];
     63  ok(snapshot.census, "Snapshot has census after saved census");
     64  ok(snapshot.census.report.children.length, "Census is in tree node form");
     65  equal(
     66    snapshot.census.display,
     67    censusDisplays.coarseType,
     68    "Snapshot stored correct display used for the census"
     69  );
     70 });